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Full-Text Articles in Natural Products Chemistry and Pharmacognosy

Targeting The Cd47/Calreticulin Axis In Triple Negative Breast Cancer Using Ha Grafted Chitosan Nanoparticles Loaded With Doxorubicin And Polygodial, Hadir M. Emara Jan 2026

Targeting The Cd47/Calreticulin Axis In Triple Negative Breast Cancer Using Ha Grafted Chitosan Nanoparticles Loaded With Doxorubicin And Polygodial, Hadir M. Emara

Theses and Dissertations

Background: Triple-negative breast cancer (TNBC) is considered the most aggressive subtype of breast cancer. Although progress in cancer treatment has led to better results for different types of breast cancer, TNBC remains particularly challenging due to persistent resistance to both chemotherapy and immunotherapy. This resistance ultimately renders chemotherapy less effective and is frequently associated with substantial side effects. Immunosurveillance significantly impacts the onset of cancer, the rise of resistance to therapies, and the likelihood of tumor recurrence. In this immunomodulatory process, Cluster of Differentiation 47 (CD47) and Calreticulin (CALR) are two key regulators. CD47 expression is strongly linked to anti-phagocytic …


Nanoformulations Of Essential Oils Extracted From Pistacia Lentiscus And Boswellia Sacra And Investigation Of Their Anticancer, Antimicrobial, And Antioxidant Activities., Obaydah Abd Alkader Alabrahim Aug 2023

Nanoformulations Of Essential Oils Extracted From Pistacia Lentiscus And Boswellia Sacra And Investigation Of Their Anticancer, Antimicrobial, And Antioxidant Activities., Obaydah Abd Alkader Alabrahim

Theses and Dissertations

Essential oils (EOs) obtained from natural sources have shown promising biological and therapeutical properties such as anticancer, antimicrobial, and antioxidant activities, attributing to their high content of a variety of bioactive components. However, EOs’ therapeutic properties are limited by their low stability, poor bioavailability, high volatility, and low targeting ability. Therefore, the encapsulation and nanoformulation of EOs can maximize their therapeutical efficiency and physicochemical properties while overcoming their undesirable side effects and drawbacks. EOs extracted from the resins of Pistacia Lentiscus var. Chia (P.oil) and Boswellia Sacra (B.oil) are two promising EOs that have shown great therapeutic potential. P.oil was …


Evaluation Of The Anticancer Potential Of Alchemilla Vulgaris Extract Against Human Neuroblastoma Cells, Yomna Moqidem Feb 2021

Evaluation Of The Anticancer Potential Of Alchemilla Vulgaris Extract Against Human Neuroblastoma Cells, Yomna Moqidem

Theses and Dissertations

Neuroblastoma is one of the most challenging pediatric tumors that present heterogeneity in prognosis and survival despite intensive treatment protocols. Therefore, there is an urge to develop novel and more potent anticancer drugs. Medicinal plants have recently gained worldwide attention due to their variable activities, wide availability, and cost-efficiency. Accordingly, this study attempted to identify novel plant extracts that could show potential anticancer properties against neuroblastoma. In this study, Alchemilla vulgaris (A.vulgaris) ethyl acetate extract was prepared and evaluated for its anticancer potential against SH-SY5Y Human neuroblastoma cell line. The Phenolic content of the prepared extract was characterized …


The Antioxidant And Antimicrobial Activities Of Cornsilk Extract Encapsulated In Polysaccharide Nanoparticles, Maryam Mady Jan 2021

The Antioxidant And Antimicrobial Activities Of Cornsilk Extract Encapsulated In Polysaccharide Nanoparticles, Maryam Mady

Theses and Dissertations

Corn silk possess antibacterial and antioxidant activities due to its phenolic compounds but they are of low bioavailability that requires some innovative techniques to develop such active ingredients in a safe and less toxic manner. Accordingly, silk extract SE was encapsulated in chitosan nanoparticles CS NPs, which is a natural and abundant polymer derived from chitin. Among 15 experimental trials via design expert software, the optimum formula of SE x\CS NPs was prepared at 800 rpm, 5hrs. on magnetic stirrer, and by CS: TPP ratio was 2.5:1. Then SEM showed the majority of particles size diameter in the range of …